High speed pump



Sept. 20,1932.V H. F.y vlcKERs HIGH SPEED PUMP- Filled Feb. 25. 1929 2 Sheets-sheet .1

/ffi u sept.2o,1932. ,H. F. vlcKERs 1,878,736

HIGH SPEED PUMP Filed Feb. 25, '1929 2 sheets-sheet 2 Patented Sept. 20, 1932 men srnnn rum 'Application med February 25, 1929. Serial No. 842,693.

This invention has to do with a reciprocating pump and it isa gleneral object of the invention .to provide a igh speed reciproeating pump.

` Reciprocating pumps, in'general, depend upon the suction action of the pistons operating outwardly in the cylinders to Adraw the fluid into the pump preliminary to its being forced from the pump under pressure. In practice such pumps operate` satisfactorily at low or moderate speeds, however," they do not operate efficiently or in a practical way at high speeds as the Huid does not act in a manner to follow the pistons, with the result that partial vacuum or voids are drawn in the cylinders.. Thisresults 1n lmproper or ineiicient chargin `of the cylinders and hammerin or knocking, which is disagreeable and estructive.

lIt is a general object ofthe present invention to provide a reciprocatinpump mech-` anism embodying means where y fluid properly follows the piston action, even though the piston speed may be very high.

tion to provide an improved, ecient reciprocating Y of operation at high speeds.

It is a further object of the invention to provide a pump operable at high pressuresv without appreciable leakage or loss through the valve means. e

The various objects and features of the present invention will be best and more fully understood from the following detailed de'- scription of a typical form .and application e of the invention,lthroughout whic tion reference is Ahad to the accompanying drawings, in which:

Fig. 1 is an end view of the mechanism embodying the invention showlng the parts at one side of the center line broken awel); to show in section, the section being throug the cylinders and plungers of the mecha? nism. Fig. 2 is a longitudinal side viewof ump of the rotary type capable descripthe mechanism showing the parts above the center line in vertical central section. Fig.

-3 is a` detailed transverse lsectional view through the fluid feed bein a view taken as indicatedl by linev 34-3 on ig. 2, and Fig. am 4 is a detailed plan section, being a view taken as indicated by line 4-4on Fig. 1.

. The present invention has to do, generally, with. the reciprocating type ofpump and is concerned primarily with the provision of such a pump capable of eiiicient, full capacity operation at high speeds. The invention is particularly suited for embodiment in or application to the rotary ty e of reciprocating pump, such type of pump eing well adaptedv for high speed operation. I will therefore de- -scribe the invention as'applied to a rota type of reciprocating pump in which the cylinder block and plungers operating in the cylinders of the block revolve as a unit within a casing, the reciprocation of the plungers in the cylindersbeing caused by cooperation lbetween slippers on the outer ends of the lplungers and an eccentric in the casing. It It is another object of the present invenis to be understood, however, that the broader principlesof the invention are not to be con.- sidered limited to the specific details herein ,set forth as they may be applied to other constructions.

The mechanism `embodying the present invention includes,'generally, a cylindrical casi ing A, a cylinder block B rotatably mounted Y in the casing on a shaft C, plungers `D slidably carried in the cylinders of the block B, slippers E on the plungers., an eccentric F ling flow of fluid to and from the cylinders of the block, and feeding means H operable to supply Huid to the valve means so that it will follow the action of the plungers even at high speeds of operation.

The casing A includ s an annular body-10, ends 11 and 12 closing he ends of the body, mounting brackets 13 on the parts just men- .80 in the casing forming a bearing on which the e slippers E operate, `valve means G controltioned, and various other features of construction as will be apparent from the drawings. In the construction shown the end 11 is integral with the body While the end 12 is separable from the body, being attached thereto by means of cap screws 14. The shaft C,'which carries the c linder block, extends into the casing throug the end 11 and con-V tinues through the end 12 and means H, as will be hereinafter described. The shaft C is supported in the ends 11 and 12 by means of bearings 15. The end of the-,shaft projecting from the Aend 11 of the casing can be engaged for the purpose of-driving the shaft.

The cylinder block B is; lixed, for instance,

keyed on the shaft C within the body 10 and between the ends 11 and 12. The block is provided with a plurality of radially disposed cylinder openings 16 and has a hub extension 17 textending intoA a central hublike extension 18 of the end 12. The lungers D are slidably carried in the cylin ers 16.

The shoes or slippers -E are pivotally connected to the outer ends of the plungers and slidably operate in the internal eccentric bearing 19 of the eccentric F.' The bearing 19 is circular or annular and is offset or ecconsidered a part or p'ortion of the cas- The valve means Gis provided to control the iow of Huid between an inlet port 20 and the several cylinders 16. The port 20 is 1ocated in the extension 18 of the end .12, and the valve means G is located in the hub extension 17 of the cylinder block B. There is an' annular recess 21 in the valye means G to continuously register with the port 20. Inlet valves 22 connect the recess 21 with cylinder ports 23, there bein one port 23 extending to each cylinder. utlet -valves 24 connect the cylinder ports 23 with anoutlet port 25 formed in the shaft C. The valves 22 and 24 are preferably reciprocating valves, say, spring pressed ball valves.

Through this valve arrangement iuid is drawn into the cylinders from the ort 20 through the recess 21, valves 22, an ports 23 during outward movement of the plungers in the cylinders, and is forced from the cylinders through the ports 23 and valves 24 and into the port 25 during inward movement of theA plungers in the cylinders. The

shaft C extends through the end 12 and through the feeding means H and theport 25 extends to the end of the shaft Where it may outer end of the central extension 18 of the end 12 and operates to receive fluid through a port 32 and deliver it to the port 2O under pressure. The means comprises a fluid handling mechanism carried in a housing 33 secured to the extension 18. In'the particular form of the invention shown I have illustrated a conventional form of gear pump for handling the fluid. This ymechanism includes a gear '35 fixed .on the-shaft C within the housing 33 meshing with a gear 36 carried in the housing 33. The housing ts closely around the gears 35 and 36 so that fluid admitted to the port 32 which communicates with one side of the mesh-ing parts of the gears is carried around by the gears and dei-vered to a'port 37 at the opposite side of said point. The port 37 is formed through or in the housing 33 and communicates with the' port 20 so that the fluid handled by the gear pump isdelivered to the port 20 or is supplied to the valve means G under It will be apparent that as the spec of rotation of the mechanism varies, the capacity of the gear pump varies, so that fluid is always supplied to the valve means G under pressure. -Further, it is to be understood that other forms offluid handling means, other than a gear pump may be used in the means H. For instance, I may use a mechanism of the type set forth in my co-pending allication entitled Vane pump or motor, ed Feb. 25, 1929, Serial Number 342,602. l

In operation'uid admitted to the port 32 is handled by the means H, that is, by the pump mechanism embodied in the means H, so that it is positively fed or-delivered to the valve means G. Thls causes the fluid to be fed into the cylinders 16 positively so that the filling of the cylinders as the pistons move outwardly is not dependent solely upon the suction action, it being obvious, howeyer, that the full benefit of the suction action is utilized together with the positive feed ac' tion. As above described, the fluid entering the cylinders as the plungers move outwardl is forced from the lcylinders and out through the valves 24 and port 25 as the plungers move f inwardly. The pressure exerted on the fluid aving described my invention, Ic1aim:

In a pump, a casing, a shaft extending into the casing, a block on the shaft withinthe casing and having a plurality of radial cylinders, an eccentric ring surrounding the block, pistonsin the cylinders operable through engagement with the ring; valve means inthe block and shaft for controllin the admission and discharge of fluid to an from the inner ends of the cylinders, a hous ing at an end of the casing surrounding the shaft, and a pump in the housing operable by the shaft to'supply fluidy under pressure to the valve means through a port in the casin In Witness that I claim the foregoing have hereunto subscribed my name this 25th day of January, 1929.

Y HARRY F. VICKERS. 

